Water-heating apparatus



(No Model.) 2 sheets-sheet 1.

L. M. WOODGOCK.

WATER HEATING APPARATUS. y No. 406,685. Patented-July 9, 1889.

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2 Sheets-Sheet 2.

(No Model.)

L. M WOODGOG-K. WATER HEATING APPARATUS.

No. 406,685. yPatented JulyQ, 1889.

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LEONARD l M. VOO-DCOCK,

PATENT OFFICE;

or AUBURN, NEw YORK.

wATER-HEATlNc APPARATUS.

SPECIFICATION forming peut ef Letters Patent No; 406,685, dated July 9, 1889.

Application iiled March 9*, 1889.

, To @ZZ whomA it may concern,.-

Be it known Vthat I, LEONARD M. WOOD- COCK, a citizen of the United States, residing e and it consist-s in certain no\f*el'features of construction and combination, which will be hereinafter fully described.

I have illustrated said invention in the accompan ying drawings, and it is fully disclosed in the following specification and claims.

Figure 1 represents a vertical section of a steam-boiler and furnace embodying my invention. Fig. 2 is a section similar to Fig. 1 through the smoke-fines and outlet-pipe. Fig. 3 is a partial view of the boiler; and Figs. 4, 5, G, and 7 are detail views of parts detached.

In the drawingsI have shown my invention embodied in a steam-boiler and furnace, which is constructed in any preferred or usual manner.

A represents the ash-pit; B, the fire-pot; C C C C, a series of hollo1 rings or sections, which are superimposed upon each other and upon the fire-pot and form the water-jacket or boiler; and D is the steam-dome, located above said'water-jacket.

The sections C C C C are preferably constructed in the form of two hollow annular concentric tubes c c', the one within the other, and connected therewith by radially-extending tubes c2. These parts C C are provided at suitable intervals with openings c3 in their z upper and lower faces, whereby they may be also register' and form vertical passages, as before stated. The fire-pot B may also be pro- Serial No. 802,60. (No model.)

vided-with a water-jacket connected with the apertures c3 inv the adjacent ring` C. The ring c of the section adjacent to the fire-pot preferably extends downwardly into the same, as shown, inorder to subject it to a greater degree of heat and give more room for combustion.

W'ithin the inner peripherie-s of the hollow rings C is formed a circular shaft, which serves as the fuel-magazine. Upon the uppermost ring C is placed a cylinder E, which-is of the same diameter as the fuel-magazine, and is provided on its exterior at three or more .points with a web or rib e, terminating at the lower edge of said cylinder in a foot-piece e', projecting radially outward a short distance. The rib or web c may extend vertically the entire length of the cylinder E, or may terminate a short distance from the top, as desired. The steam-dome D is constructed with acentral aperture, which ts over the ribs or webs c of the cylinder E, leaving `a space between the two parts, and the cylinder does not eX- tend quite to the top of the dome D.

The domeD is provided with an annular portion d, which surrounds the cylinder E, and its outer portion is provided with downwardly-extending portions d', which connect with the apertures c3 in the upper section C, and between Vwhich are recesses d2, communi- -eating with the smoke-passages C and a free annular space cl3, formed between the parts cl and d of the dome. It will be seen that there is a space between the cylinder E and vthe inner face of the dome D, which prevents the cold fuel from chillingthe steam in the dome, and this space also communicates with the annular space d3, so that all gas arising in the fuel-magazine will pass into the smokepassage and will be conducted away with the products of combustion. The products of combustion will pass' upwardly between the rings c c and around the pipes c2 and enter the annular passages d3, from whence they pass through the recesses d2 into the returnfines C', and are conducted into a compartment B', surroundingV the fire-pot and its water-j acket, which is connected with the smokeoutlet.

The outer wall of the furnace and the wall of recess d2 of the steam-dome' are provided with hand-holes f, having unequal diameters, which are adapted to be closed by covers F. (Best seen in Figs. 3, G, and 7.) These covers F are of the same shape as the handholes and have unequal diameters. I prefer to construct them, as shown in Figs. G and 7 of oblong' or oval form, and provide each cover with a 'securing -plate f', having unequal diameters, its greater diameter being greater than the lesser diameter of said hand-holes. This plate is secured to a bolt or rivet passing through said cover F, and I may provide said bolt outside of said cover with a nut or other retaining device, or I may provide it with a winged head, by which the said bolt and the plate f may be turned. Then the .cover is to be placed in position, the plate f is passed within said hand-hole and turned until it engages the wall of the recess d2. The nut or other retaining device, if one is employed, is then turned up and the cover se- The nut is not necessary, however, and may be dispensed with, as before stated. l/Vhen the bolt is provided with a winged head or other lneans for turning theplate f', the cover will be placed in position and the bolt and plate turned bymeans of such winged head until the plate engages the inner wall of the hand-hole, when the cover will be secured 1n position. By removing these hand-holes access may be had to the smoke-fines for cleaning the same.

The top of the steam-dome D .or top plate of the boiler is provided with a central aperture, preferably square, which is in line with the fuel-magazine, around the edges of which is a raised iiange g. The top of the furnace is also provided with two or more sets of guides g g', for the sliding magazine-cover G, two sets being shown, each of said guides being located in line with a part of flange g forming one side of the central aperture, and said guides extending to different portions of the periphery of the dome. These guides and the flange are of the same height, and it will be readily seen that the cover G may be placed upon one set of guides and made to slide so as to cover the central aperture, or it may be drawn to the outer edge or periphery of the dome. It will also be seen that the cover G may be placed in position to engage one or the other of the sets of guides and the cover drawn to one or another portion of the periphery of the dome, as is found most convenient or desirable. This cover Gis constructed with an inclined top g2, which is concave or trough-like in cross-section, as shown in Figs.

- l and 2, and when drawn to the outer edge of the boiler this trough-like and inclined bottom portion will form a chute to conduct the fuel directly to the magazine, and the cover is preferably provided with a suitable handle G.

I provide the outer wall of the ash-pit A with a damper aperture or seat h, which is provided with a damper Il, hin ged, preferably at its upper edge, to the seat h. This damper is provided with a flange 7L to eng ge its aperture or seat. The upper plate of the ashpit is also provided with an aperture adjacent to the damper H. This aperture is fitted with a check-draft damper K, which is provided with trunnions engaging suitable bearings in` the plate. The damper I-I is provided with an arm h2, which engages the check-draft damper K, and is adapted to operate the same. To this end the check-draft damper K may be provided on the under side of the same with an annular guide 7c, and the end of the arm h2 is bent or curved to form a projection for engaging said guide, and this construction forms a movable or sliding connection between t-he arm 72.2 and check-draft damper K. The arm 71,2 is of such length that when the damper I-I is open the checlcdraft damper will be closed. lVhen the damper Il is moved in a direction to close the same, as soon as the flange 77, engages the upper portion of the seat 7i the arm h2 will begin to move the check-draft damper in a direction to open the same. When the flange h has completely entered the seat h and is stopped by the projecting edge of the damper, and the damper H is closed, the damper K will have been thrown open to its fullest extent. Vhen the damper II is operated in a direction to open the same, the damper K will be closed, the foregoing operation being reversed. The damper Il may be connected to any form of regulator whereby the draft of the fire may be automatically governed.

Having now particularly described my 1nvention, what I claim, and desire to secure by Letters Patent, is

l. The combination, with a series of horizontal sections having central apertures forming the fuel-magazine, and provided with draftilue`s, of a cylinder forming a continuation of said fuel-magazine, provided with radial webs or ribs terminating at the lower edge of the cylinder in radial feet, anda steamdome surrounding said cylinder and supported upon said sections and said radial feet, substantially as described.

2., The combination, with the fuel-magazine, of a sliding cover for the same, said cover having an inclined top adapted when the cover is disengaged from the magazine to guide the fuel into the magazine, substantially as described.

3. The combination, with the fuelmaga IOO IIO

IIS

zine, of a sliding cover for the same, having A an inclined top concave or trough-shaped in cross-section, adapted when said cover is4 ing an ash-pit beneath the same, of a-darnper in a Wall of said ash-pit, a check-draft damper between the ash-pit and smoke-flue, and an operative connection between the damper and the check-draft damper, substantially as described.

7. The combination, with t-he fire-pot having'an ash-pit beneath the same, of a chamber surrounding the fire-pot and connected with the smoke-outlet, a damper in the wall of said ash-pit, and a check-draft damper between the ash-pit and the said chamber, substantially as described. e

8. The combination, with the iire-pot having an ash-pit beneath the same, of a chamber connected with the smoke-outlet, a damper for controlling the draft, a check-draft damper between the ash-pit and said chamber, and an arm on said damper engaging the check-draft damper, substantially as described.

9. The combination, with the lire pot, of sections forming the boiler, the section adjacent to said lire-pot having a hollow annular portion "around the center of the same depending within the fire-pot and extending below the horizontal planerof the bottom of saidsection, substantially as described.

l0. The combination, with a furnace having a hand-hole in its walls communicating with the smoke-fines and having unequal dialneters, of a cover having unequal diametersengaging said hand-hole, a bolt passing'through said cover and provided atvone end with a securing-plate rigidly secured thereto and at the other end with a head, whereby said bolt maybe turned and the plate made toengage the walls of said hand-hole for securing said cover in place, substantially as described.

In testimony whereof I affix my signature in 45 presence of two witnesses.

LEONARD M. WOODCOCK.

iVitnesses:

W. F. WAIT, WM. F. GIBBs, Jr. 

